The new TSM 7.1 operation center, also TSM 188.8.131.52, also called TSM Operations Center, or internally even TSM Control Center...
The default URL is https://xxx.xxx.xxx.xxx:11090/oc/
The port wasn't in the docs, and the path wasn't in some of the docs. None of it came up Googling.
So frustrating. I had a screen scrape of my install, but somehow missed this, or maybe it's only under advanced?
I couldn't find it in other docs, but Will was able to help me out.